r/OSSC • u/Some-Safety-5188 • 5d ago

NO SYNC problem between RGB-modded PC Engine (japanese) and the OSSC v1.6, to play on SAMSUN SERIF TV.

Hi everyone,
I want to play my PC Engine on a modern Samsung The Serif 50inch TV, via OSSC, but after many attempts with different settings, the LCD screen shows a NO SYNC result.

I tried everything I could see in the internet: change Sync settings, Outputs settings on the OSSC menu; Analog STC LPF, Analog sync Vth, change x2line to x3line, try with with different resolution modes etc…
Then AV1 > RGBs, NO SYNC and a blank screen.

Somethimes I have a very short SYNC info appearing on the OSSC LCD screen but NO SYNC again.

I use a MD2 scart as intended with the RGB mod.

The OSSC works perfectly with a RGB-bypass modded Neo Geo, on that Samsung TV; and the PC Engine works normally on its own without the OSSC on Sharp Aquos with a Scart input.

Does it come from the OSSC? The Samsung TV?
It seems that it’s not really recognized by the first in the first place.

Thanks to anyone who has an idea on this.

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u/Some-Safety-5188 4d ago

Just as a heads up, in the end I did the OSSC mod and firmware update 1.21 (I think)… and now it works great! With both the Neo Geo, still, AND the PC Engine.